| Effect of
chest wall deformity on heart size |
| >50% |
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| The
lower portion of this patient’s sternum bows inward toward the |
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| heart.
The heart is compressed between the sternal abnormality (which |
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| is
called a pectus excavatum deformity) and the spine. On the frontal |
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| radiograph,
the heart may appear enlarged. |
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